. American engineer and railroad journal . ual rigid andstrong design. It is swung from a steel shaft carried by bearingssecured to the guide yoke and resting on top of the frame. Theinner arm is slightly longer than the outer and connects to thevalve stem by a link. This arrangement makes an admirablesupport for the weight of the gear and eliminates all possibilityof the valve rod getting out of line because of the weight carriedby it. The valve gear links are carried outside of the front driv-ing wheel, being supported by longitudinal bearers connectingthe guide yoke with the frame cross-tie
. American engineer and railroad journal . ual rigid andstrong design. It is swung from a steel shaft carried by bearingssecured to the guide yoke and resting on top of the frame. Theinner arm is slightly longer than the outer and connects to thevalve stem by a link. This arrangement makes an admirablesupport for the weight of the gear and eliminates all possibilityof the valve rod getting out of line because of the weight carriedby it. The valve gear links are carried outside of the front driv-ing wheel, being supported by longitudinal bearers connectingthe guide yoke with the frame cross-tie between the first andsecond drivers, this being the same general arrangement that iscommonly used on Pacific type locomotives. The boiler, while very similar and of practically the same sizeas was used before, contains a novelty in the shape of a sidewater leg, which is 4 in. wide at the mud ring at the back endof the firebox and 6 in. wide at the forward end of the firebox,the mud ring being tapered, as is shown in the illustration. The. i4t^-3i«;K play and the boxes are braced transversely by tie rods. The loadis transferred to the box through cast iron plates having in-clined sliding surfaces. The general dimensions, weights and ratios of these locomo-tives are as follows: GENERAL DATA. Gauge 4 ft. S/z in. Service Passenger Fuel Bil. Coal Tractive effort 31,100 lbs. Weight in working order 234,900 lbs. Weight on drivers 160,150 lbs. Weight on leading truck 37,400 lbs. Weight on trailing truck 37,350 lbs. Weight of engine and tender in working order 390,000 lbs. Wheel base, driving 12 ft. 10 in. Wheel base, total 32 ft. 9 in. September, 1909. AMERICAN ENGINEER AND RAILROAD fOURNAL. ::: Wheel base, engine and lender 64 ft. 3% in. RATIOS. Weight on drivers 4- tractive effort Total weight —■ tractive effort Tractive effort X diam. drivers -:- heating surface Total heating surface -j- grate area Firebox heating surface -4- total heating surface, per c
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
